WO1993013090A1 - Novel quinolone carboxylic acid derivatives and processes for preparing same - Google Patents

Novel quinolone carboxylic acid derivatives and processes for preparing same Download PDF

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Publication number
WO1993013090A1
WO1993013090A1 PCT/EP1992/002264 EP9202264W WO9313090A1 WO 1993013090 A1 WO1993013090 A1 WO 1993013090A1 EP 9202264 W EP9202264 W EP 9202264W WO 9313090 A1 WO9313090 A1 WO 9313090A1
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WIPO (PCT)
Prior art keywords
group
ene
carboxylic acid
dihydro
azabicyclo
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PCT/EP1992/002264
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French (fr)
Inventor
Wan Joo Kim
Myung Hwan Park
Jae Du Ha
Kyong Up Baik
Tae Suk Lee
Tae Ho Park
Keun Soo Nam
Bong Jin Kim
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Hoechst Aktiengesellschaft
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Publication of WO1993013090A1 publication Critical patent/WO1993013090A1/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
    • C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
    • C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
    • C07D215/54—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
    • C07D215/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/52—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring condensed with a ring other than six-membered
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Definitions

  • the present invention relates to novel quinolone carboxylic acid derivatives, and pharaaceutically acceptable salts thereof, substituted at 7-position of the quinolone or at 10-position of the pyridobenzoxazine which possess a broad spectrua of potent antibacterial activities; and to novel processes for preparing these coopounds.
  • the present invention primarily pertains to said novel quinolone coapounds and pharaaceutically acceptable salts thereof; and novel processes for preparing these coapounds.
  • novel quinolone compounds of the present invention can be represented by the following foraula(I):
  • X is a nitrogen atoa or a C-Y group wherein Y is ahvdrogen, fluorine, chlorine or bromine atoa or a aethoxy or aethyl group;
  • R 1 is a C 1-6 alkyl group optionally substituted with a halogen
  • R 2 is a hydrogen atom, a carboxy protecting group or a
  • R 3 and R 4 which may be the same or different, are a hydrogen
  • Z is a hydrogen or halogen atoa, an amino, hydroxy or methyl
  • n 1 to 3.
  • the coapounds of foraula(I) encompass their acid or base addition salts and hydrates.
  • said C 1-6 haloalkyl group is preferably a C 2-4 alkyl group substituted with a fluorine atom, e.g., 2-fluoroethyl group;
  • said C 1-6 hydroxyalkyl group is preferably a C 2-4 hydroxy- alkyl group, e.g., 2-hydroxyethyl group;
  • said C 3-6 cycloalkyl group is preferably a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl group, aore preferably, a cyclopropyl group;
  • said alkenyl group is preferably a vinyl, isopropenyl, propenyl or isobutenyl group;
  • said phenyl group substituted with a halogen atoa is preferably a phenyl group substituted with one or two fluorine atoms, more preferably, 4-fluorophenyl or 2,4-difluorophenyl group;
  • CH(CH 3 )- group may be (R), (S) or a mixture thereof.
  • said carboxy protecting group is an ester moiety which can be readily, e.g., hydrolyzed to produce a free carboxylic acid, e.g., a lower alkyl group such as aethyl, ethyl, n-propyl or t-butyl group, a lower alkanoyloxy-lower alkyl group such as acetoxyaethyl or pivaloyloxyaethyl group, a lower alkoxycarbonyloxy-lower alkyl group such as aethoxycarbonyloxynethyl or 1-ethoxycarbonyloxyethyl group, a lower alkoxynethyl group such as aethoxymethyl group, a di(lower alkyl)amino-lower alkyl group such as 1-dimethylaainoethyl group, or a 4-aethylene-5-aethyl-1,3- dioxolene-2
  • said pharmaceutically acceptable aetal or organic cation is preferably a cation of alkaline aetal or alkaline earth metal such as sodium, potassium, silver, calcium or magnesium cation or an organic cation such as tertiary or quarternary C 1-4 alkyl ammonium cation.
  • said lower alkyl group is preferably a aethyl, ethyl, propyl or butyl group, aore preferably, a aethyl or ethyl group;
  • said acyl group is preferably an acetyl, propionyl or benzoyl group; and said nitrogen protecting group metabolizable in vivo is preferably a formyl, alkoxycarbonyl, alkylcarbonylmethylene, alkoxy- carbonylmethylene or 4-methylene-5-methyl-1,3-dioxolene-2-one group.
  • said halogen atom is preferably a fluorine atom.
  • n is preferably 2 or 3.
  • the stereochemical configuration of azabicycloamine substituted at 7-position of the compounds of formula(I) may be(R), (S) or a mixture thereof.
  • coapounds of the present invention preferred are: 7-[6-amino-3-azabicylo[3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl- 6,B-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid or its hydrochloride salt or its lactic acid salt, 1-cyclopropyl-6,8- difluoro-7-[6-aethylamino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1,4- dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo [3,3,0]oct-1 (5 )ene-3-yl]-1-cyclopropyl-8-chloro-6-fluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid or its hydrochloride salt or its lactic acid
  • quinolone coapounds of the present invention represented by foraula(I) and pharmaceutically acceptable salts thereof can be prepared as follows.
  • R 1 , R 3 , R 4 , X, Z and n are the same as defined previously;
  • R 2 is a hydrogen atom or a carboxy protecting group
  • L is a leaving group which is a fluorine, chlorine or broaine atoa, a nethanesulfonyl group or a para-toluenesulfonyl group;
  • A is a hydrochloric, bromic, sulfuric or trifluoroacetic acid.
  • the quinolone compounds of foraula(I) wherein R 2 is a hydrogen atom or a carboxy protecting group(hereinafter referred to as the coapounds of formula (la)) can be prepared by reacting the coapounds of foraula(II) with the compounds of foraula(III) or (IlIa) in the presence of a base.
  • the above reaction can be carried out in the presence of an inert solvent such as aethanol, ethanol, isopropanol, acetonitrile, pyridine, diaethylforaaaide, diaethylsulfoxide, dioxane, etc. or a mixture thereof at a temperature ranging from 10 and 200oC preferably 50 and 120oC for 10 ain to 24 hrs.
  • an inert solvent such as aethanol, ethanol, isopropanol, acetonitrile, pyridine, diaethylforaaaide, diaethylsulfoxide, dioxane, etc. or a mixture thereof at a temperature ranging from 10 and 200oC preferably 50 and 120oC for 10 ain to 24 hrs.
  • a base such as triethylaaine, diisopropylethylamine, pyridine, 1,8-diazabicyclo[5,4,0]undec-7-ene or alkaline aetal or alkaline earth aetal carbonate aay be used to neutralize the acids produced in the above reaction.
  • R 1 , R 3 , R 4 , Z, X and n are the saae as defined previously;
  • Hal is a chlorine, broaine or iodine atoa
  • R 2 is a carboxy protecting group which is a lower alkyl group such as aethyl, ethyl, n-propyl or t-butyl group, a lower alkanoyloxy-lower alkyl group such as acetoxyaethyl or pivaloyloxyaethyl group, a lower alkoxycarbonyloxy- lower alkyl group such as aethoxycarbonyloxyaethyl or 1-ethoxycarbonyloxyethyl group, a lower alkoxyaethyl group such as aethoxyaethyl group, a di(lower alkyl) amino-lower alkyl group such as diaethylaminoethyl group or a 4-methylene-5-methyl-1,3-dioxolene-2-one group.
  • a lower alkyl group such as aethyl, ethyl, n-propyl or t-but
  • the compounds of formula(Ia-2) can be prepared by reacting the compounds of formula (Ia-1) with the coapounds of R 2 -Hal in an inert solvent such as haloalkane or dimethylformamide in the presence of a base such as diisopropylethylamine.
  • the compounds of f ⁇ raula(Ia-1) obtained from Process A can be converted to the coapounds of foraula(Ia) wherein R 2 is a pharmaceutically acceptable aetal or organic cation(hereinafter referred to as the coapounds of foraula(Ia-3)) in accordance with the following Process C.
  • R 1 , R 3 , R 4 , Z, X and n are the same as defined previously; and R 2 is a pharmaceutically acceptable aetal or organic cation.
  • the coapounds of formula(Ia-3) can be prepared by dissolving the coapounds of formula (Ia-1) in a lower alcohol or haloalkane solvent; adding thereto an R 2 -donor in water or a lower alcohol; and collecting the produced precipitates or removing the solvent.
  • Said R 2 -donor used in the above reaction may be sodium hydroxide, potassium hydroxide, calcium hydroxide, aagnesium hydroxide, silver nitrate or organic cation coapounds.
  • the coapounds of foraula(Ia-3) may further encompass, their hydrates.
  • the compounds of formula(Ia) obtained from Process A wherein R 4 is a hydrogen atom(hereinafter referred to as the coapounds of foraula(Ia-4)) can be converted to the coapounds of foraula(Ia) wherein R 4 is the saae as defined in the foraula(Ia), excepting a hydrogen atoa(hereinafter referred to as the compounds of formula(Ia-5)) by using the following Process D.
  • R 1 , R 2 , R 3 , Z, X and n are the same as defined in the formula
  • R 4 is the same as defined in the foraula(Ia), except a
  • the compounds of formula(Ia-5) can be prepared by reacting the compounds of formula (Ia-4) with an R4-donor of foraula R4-Hal(wherein Hal is a chlorine, bromine or iodine atom) in the presence of a base such as triethyl- amine, diisopropylethylaaine, 1,8-diazabicyclo[5,4,0]undec-7-ene, sodium hydride, potassium hydride, calcium hydride or alkaline metal carbonate.
  • a base such as triethyl- amine, diisopropylethylaaine, 1,8-diazabicyclo[5,4,0]undec-7-ene, sodium hydride, potassium hydride, calcium hydride or alkaline metal carbonate.
  • R 3 is a hydrogen atom or an alkyl group
  • R 4 is a nitrogen protecting group aetabolizable in vivo.
  • R 4 is a formyl group
  • the compound of formula(Ia-4) is reacted with acetic anhydride or sodium acetate in formic acid; and if R 4 is an acyl group, with an acid anhydride or halide having two to four carbon atoms in the presence of a base such as
  • the coapounds of formula(Ia) may be converted to acid addition salts thereof with an inorganic or organic acid such as hydrochloric, sulfuric, phosphoric, nitric, aethanesulfonic, acetic, formic, propionic, lactic, maleic, malonic, fumaric, tartaric, citric, ascorbic, glutamic, paratoluenesulfonic acid, etc; and to their hydrates.
  • an inorganic or organic acid such as hydrochloric, sulfuric, phosphoric, nitric, aethanesulfonic, acetic, formic, propionic, lactic, maleic, malonic, fumaric, tartaric, citric, ascorbic, glutamic, paratoluenesulfonic acid, etc; and to their hydrates.
  • the above conversion reaction is carried out by dissolving the compounds of formula(Ia) in a solvent, e.g., a lower alcohol such as methanol or ethanol, or a haloalkane such as chloroform, dichloromethane or dichloroethane; adding an aqueous or alcoholic solution of a selected organic or inorganic acid; and collecting the precipitates produced therefrom or removing the solvent.
  • a solvent e.g., a lower alcohol such as methanol or ethanol, or a haloalkane such as chloroform, dichloromethane or dichloroethane
  • the present invention further encompasses a pharmaceutical composition comprising one or more compounds of foraula(I) and non- toxic inert excipients.
  • the compounds of the present invention can be administered locally, orally, parenterally or rectally, preferably intravenously or intramuscularly.
  • 200mg/kg of body weight particularly 1 to 50mg/kg of body weight is preferred.
  • amount of the compound actually administered may be adjusted in the light of the relevant circumstances including the form of formulation, the chosen route of administration, the age, weight and response of the individual patient, and the severity of the patient's symptoms.
  • One or more compounds of the present invention may be either administered as such or formulated for administration by mixing therewith non-toxic, inert pharmaceutically acceptable expients such as solid, semi-solid or liquid diluent, filler and carrier.
  • non-toxic, inert pharmaceutically acceptable expients such as solid, semi-solid or liquid diluent, filler and carrier.
  • examples of such foraulation are in the form of: a tablet, lozenge, capsule, granule, suppository, solution, suspension, emulsion, paste, ointment, cream, lotion, powder, spray and the like.
  • the active compounds of the present invention may be coabined with conventional expients, e.g., fillers and extenders such as starch, lactose, sucrose, glucose mannitol and the like, binders such as carboxymethyl cellulose, alginate, gelatine, polyvinylpyrolidone and the like; disintegrants such as calcium carbonate, sodium bicarbonate and the like; absorption accelerants such as quarternary ammonium compound and the like; wetting agents such as cetyl alcohol, glycerine monostearate and the like; adsorbents such as kaoline, bentonite and the like; lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene glycol and the like; or mixtures thereof.
  • the tablet, lozenge, capsule, pill and granule may be coated with conventional coating materials including any opacifier.
  • the suppository may contain conventional soluble or insoluble expients, e.g., polyethylene glycol, fat, polymeric ester or a mixture thereof in addition to the active compound.
  • conventional soluble or insoluble expients e.g., polyethylene glycol, fat, polymeric ester or a mixture thereof in addition to the active compound.
  • the ointment, paste, cream and the like may contain conventional expients, e.g., animal or vegetable fat, wax, paraffin, starch, cellulose derivatives, polyethylene glycol, bentonite, talc, zine oxide or a aixture thereof in addition to the active compounds.
  • expients e.g., animal or vegetable fat, wax, paraffin, starch, cellulose derivatives, polyethylene glycol, bentonite, talc, zine oxide or a aixture thereof in addition to the active compounds.
  • the solution or emulsion for oral administration may contain conventional expients such as solvents, solubilizers and emulsifiers, e.g., water, ethyl alcohol, benzyl benzoate, propylene glycol, cotton seed oil, pinutts oil, corn oil, olive oil, fatty esters such as glycerine, polyethylene glycol or sorbitan, or a mixture thereof in addition to the active compounds.
  • solvents e.g., water, ethyl alcohol, benzyl benzoate, propylene glycol, cotton seed oil, pinutts oil, corn oil, olive oil, fatty esters such as glycerine, polyethylene glycol or sorbitan, or a mixture thereof in addition to the active compounds.
  • solubilizers and emulsifiers e.g., water, ethyl alcohol, benzyl benzoate, propylene glycol, cotton seed oil, pinutts oil, corn oil, olive oil
  • the solution, suspension or emulsion for parenteral administration may contain a sterilized isoaetric solution or emulsion.
  • the suspension may contain the expients, e.g., liquid diluent or suspending agent such as water, ethyl alcohol or propylene glycol.
  • the formulations may comprise about 0.1 to 99.5% by weight, preferably 0.5 to 95% by weight of the active compounds of the present invention; and may further contain conventionally accepted amounts of dyes, preservatives, sweetners and additives.
  • reaction mixture was cooled and filtered; and the residue was washed with acetonitrile to obtain 80mg of the desired compound in white color(yield: 60%).
  • Example 7 Preparation of 7-[6-aethylaaino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo- 1,8-naphthyridine-3-carboxylic acid
  • reaction aixture was cooled and filtered; and the residue was
  • reaction aixture was cooled and filtered; and the residue was washed with acetonitrile and ethylether to obtain 60mg of the
  • reaction aixture was cooled, concentrated under a reduced pressure
  • Example 29 Preparation of 7-[6-methylamino-3-azabicyclo[3 ,3, 0]oct- 1(5 )ene-3-yl]-1-(4-fluorophenyl )-6 , 8-difluoro-1 ,4- dihydro-4-oxoquinoline-3-carboxylic acid
  • Example 33 Preparation of 7-[6-methylamino-3-azabicyclo[3 , 3 ,0]oct- 1(5 )ene-3-yl]-1-(t-butyl)-6-fluoro-1 ,4-dihydro-4- oxoquinoline-3-carboxylic acid
  • a capsule formulation was prepared in accordance with the following coaposition:
  • a solution formulation was prepared in accordance with the following composition:
  • the minimal inhibitory concentration(MIC) of several compounds synthesized in Examples hereof against the standard strains was determined and compared with ofloxacin and ciprofloxacin. These MIC values were taken by employing two-fold dilution method: that is, two-fold serial dilutionm of each of the test compounds were made and dispersed in a Mueller-Hinton agar medium; a standard strain which had the value of 10 7 CFU/ml was inoculated on the medium, which was then
  • Test compounds were administered to feaale ICE mice weighing 20 to 25g and on day 14, LD 50 was calculated from the number of survived mice by the probit analysis.
  • the compounds of the present invention possess a broad spectrua of potent anti-bactieral activities against gram-positive and-negative bacteria as compared with the known quinolone antibiotics, ciprofloxacin and ofloxacin.
  • the compounds of the present invention also exhibit superior activities to the known quinolone antibiotics in teras of 50% effective dose(ED 50 ) on the systeaic bacterial infection. Further, the compounds of the present invention have low toxicity sufficient to be proved as drugs.
  • the compounds of the present invention will be useful as therapeutical compounds and preservatives of inorganic and organic material.

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

The present invention relates to certain novel quinolone compounds of the present invention represented by formula (I) and novel process for preparing same, wherein X is a nitrogen atom or a C-Y group wherein Y is a hydrogen, fluorine, chlorine or bromine atom or a methoxy or methyl group; R1 is a C1-6 alkyl group optionally substituted with a halogen atom or a hydroxy radical, an alkenyl group, a C3-6 cycloalkyl group, a phenyl group substituted with a halogen atom or a divalent group of -OCH2*CH(CH3)-, -SCH2*CH2- or -SCH2*CH(CH3)- which forms an oxazine or thiazine ring together with the nitrogen atom to which R1 is attached and with X wherein X is C-Y; R2 is a hydrogen atom, a carboxy protecting group or a pharmaceutically acceptable metal or organic cation; R3 and R4, which may be the same or different, are a hydrogen atom, a lower alkyl group, an acyl group or a nitrogen protecting group metabolizable in vivo; Z is a hydrogen or halogen atom, an amino, hydroxy or methyl group; and n is 1 to 3.

Description

Novel Quinolone Carboxylic Acid Derivatives
and Processes for Preparing Same
Field of the Invention
The present invention relates to novel quinolone carboxylic acid derivatives, and pharaaceutically acceptable salts thereof, substituted at 7-position of the quinolone or at 10-position of the pyridobenzoxazine which possess a broad spectrua of potent antibacterial activities; and to novel processes for preparing these coopounds.
Description of the Prior Art
Quinolones such as enoxacin, norfloxcain, ofloxacin, ciprofloxacin, tosufloxacin and the like have been coaaercially available for sometime. However, most of these prior art materials are known to have relatively weak anti-bacterial potency especially against Gram-positive bacteria; and resistant microorganisms against these drugs have been found to exist.
Therefore, needs have existed for the development of new medicinal coapounds which possess a broad scope of potent antibacterial activities and are effective against quinolone-resistant microorganisms including clinically important methicillin resistant Staphylococcus aureus(MRSA). Summary of the Invention
Unexpectedly, the present inventors have discovered that certain quinolone carboxylic acid derivatives substituted at 7- position of the quinolone or at 10-position of the pyridobenzoxazine meet the above requireaents.
Accordingly, the present invention primarily pertains to said novel quinolone coapounds and pharaaceutically acceptable salts thereof; and novel processes for preparing these coapounds.
Detailed Description of the Invention
The novel quinolone compounds of the present invention can be represented by the following foraula(I):
Figure imgf000004_0001
wherein:
X is a nitrogen atoa or a C-Y group wherein Y is ahvdrogen, fluorine, chlorine or bromine atoa or a aethoxy or aethyl group;
R1 is a C1-6 alkyl group optionally substituted with a halogen
atom or a hydroxy radical, an alkenyl group, a C3-6 cycloalkyl group, a phenyl group substituted with a halogen atom or a divalent group of -OCH2"CH(CH3)-, -SCH2*CH2- or -SCH2"CH(CH3)- which forms an oxazine or thiazine ring
together with the nitrogen atom to which R1 is attached and with X wherein X is C-Y;
R2 is a hydrogen atom, a carboxy protecting group or a
pharaaceutically Acceptable aetal or organic cation;
R3 and R4, which may be the same or different, are a hydrogen
atom, a lower alkyl group, an acyl group or a nitrogen protecting group metabolizable in vivo;
Z is a hydrogen or halogen atoa, an amino, hydroxy or methyl
group; and
n is 1 to 3.
The coapounds of foraula(I) encompass their acid or base addition salts and hydrates.
In the definition of R1, said C1-6 alkyl group is
preferably a methyl, ethyl, n-propyl, isobutyl, t-butyl, n-pentyl or n-hexyl group, more preferably, an ethyl or t-butyl group;
said C1-6 haloalkyl group is preferably a C2-4 alkyl group substituted with a fluorine atom, e.g., 2-fluoroethyl group;
said C1-6 hydroxyalkyl group is preferably a C2-4 hydroxy- alkyl group, e.g., 2-hydroxyethyl group;
said C3-6 cycloalkyl group is preferably a cyclopropyl, cyclobutyl, cyclopentyl or cyclohexyl group, aore preferably, a cyclopropyl group;
said alkenyl group is preferably a vinyl, isopropenyl, propenyl or isobutenyl group; said phenyl group substituted with a halogen atoa is preferably a phenyl group substituted with one or two fluorine atoms, more preferably, 4-fluorophenyl or 2,4-difluorophenyl group; and
the stereochemical configuration of the chiral atom of
-OCHz"CH(CH3)- or-SCH2"CH(CH3)- group may be (R), (S) or a mixture thereof.
In the definition of R2, said carboxy protecting group is an ester moiety which can be readily, e.g., hydrolyzed to produce a free carboxylic acid, e.g., a lower alkyl group such as aethyl, ethyl, n-propyl or t-butyl group, a lower alkanoyloxy-lower alkyl group such as acetoxyaethyl or pivaloyloxyaethyl group, a lower alkoxycarbonyloxy-lower alkyl group such as aethoxycarbonyloxynethyl or 1-ethoxycarbonyloxyethyl group, a lower alkoxynethyl group such as aethoxymethyl group, a di(lower alkyl)amino-lower alkyl group such as 1-dimethylaainoethyl group, or a 4-aethylene-5-aethyl-1,3- dioxolene-2-one group; and
said pharmaceutically acceptable aetal or organic cation is preferably a cation of alkaline aetal or alkaline earth metal such as sodium, potassium, silver, calcium or magnesium cation or an organic cation such as tertiary or quarternary C1-4 alkyl ammonium cation.
In the definition of R3 and R4, said lower alkyl group is preferably a aethyl, ethyl, propyl or butyl group, aore preferably, a aethyl or ethyl group;
said acyl group is preferably an acetyl, propionyl or benzoyl group; and said nitrogen protecting group metabolizable in vivo is preferably a formyl, alkoxycarbonyl, alkylcarbonylmethylene, alkoxy- carbonylmethylene or 4-methylene-5-methyl-1,3-dioxolene-2-one group.
In the definition of Z, said halogen atom is preferably a fluorine atom.
In the definition of n, n is preferably 2 or 3.
The stereochemical configuration of azabicycloamine substituted at 7-position of the compounds of formula(I) may be(R), (S) or a mixture thereof.
Among the coapounds of the present invention, preferred are: 7-[6-amino-3-azabicylo[3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl- 6,B-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid or its hydrochloride salt or its lactic acid salt, 1-cyclopropyl-6,8- difluoro-7-[6-aethylamino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1,4- dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo [3,3,0]oct-1 (5 )ene-3-yl]-1-cyclopropyl-8-chloro-6-fluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid or its hydrochloride salt or its lactic acid salt, 7-[6-aethylaaino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-8-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-B-broao-1-cyclopropyl-6-fluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-8-aethoxy-1,4-dihydro-4- oxoquinoline-3-carboxylic acid, 1-cyclopropyl-6-fluoro-7-[6-aethyl- amino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1,4-dihydro-4-oxo-1,8- naphthyridine-3-carboxylic acid, 7-[6-amino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-6,8-difluoro-1-ethyl-1,4-dihydro-4-oxoquinoline-3- carboxylic acid, 7-[6-aaino-3-azabicyclo[4,3,0]non-1(6)ene-3-yl]-1- cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-5-aaino-1-cyclopropyl- 6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6- aethylaaino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-5-amino-1-cyclo- propyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-(2,4-difluorophenyl- 6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6- aethylamino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1-(2,4-difluoro- phenyl)-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1-cyclopropyl-6- fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid,
7-[6-methylamino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1-cyclopropyl- 6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid,
9-fluoro-7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-3-(S)- methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6- carboxylic acid, 9-fluoro-7-[6-aethylaaino-3-azabicyclo[3,3,0] oct-1(5)ene-3-yl]-3-(S)aethy1-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]- 1,4-benzoxazine-6-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0] oct-1(5)ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid, 7-[6-aethyl-amino-3-azabicyclo[3,3,0]oct-l(5)ene- 3-yl]-1-ehtyl-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-ethyl-6-fluoro- 1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aethylamino-3- azabicyclo[3,3,03oct-1(5)ene-3-yl]-1-ethyl-6-fluoro-8-chloro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo
[3,3,0]oct-1(5)ene-3-yl-1-ethyl-5-aaino-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid, 7-[6-aethylaaino-3-azabicyclo
[3,3,0]oct-1(5)ene-3-yl]-1-ethyl-5-aaino-6,8-difluoro-1,4-dihydro-
4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0] oct-1(5)ene-3-yl]-1-(t-butyl)-6,8-difluoro-1,4-dihydro-4-oxoquinoline-
3-carboxylic acid, 7-[6-methylaaino-3-azabicyclo[3,3,0]oct-1(5)ene-
3-yl]-1-(t-butyl)-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-
(t-butyl)-6-fluoro-8-chloro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-(t- butyl)-6-fluoro -8-chloro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid,
7-[6-amino-3-amabicyclo[3,3,03oct-1(5)ene-3-yl]-1-(4-fluorophenyl)-
6-fluoro-1 , 4-d hydr o-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-
3-azabicyclo
Figure imgf000009_0001
oct-1 (5 )ene-3-yl]-1-(4-fluorophenyl)-6,8-difluoro-
1 ,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aethylamino-3- azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-(4-fluorophenyl)-6,8-difluoro-
1 , 4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo
[3 , 3 , 0] oct-1 ( 5 ) ene-3-yl]-1-ethyl-6-fluoro-1 ,4-dihydro-4-oxo-1 ,8- napthyridine-3-carboxylic acid, 7-[6-aethylaaino-3-azabicyclo[3,3,0] oct-1 (5 )ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8- naphthyridine-3-carboxylic acid, 7-[6-aaino-3-azabicyclo[3,3,0]oct-
1(5)ene-3-yl]-1-(t-butyl)-6-fluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid, 7-[6-aethylaaino-3-azabicyclo[3,3,0]oct-1(S)ene-3- yl]-1-(t-butyl)-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-acetamino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1- cyclopropyl-6, 8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid and 7-[6-t-butoxycarbonylaaino-3-azabicyclo[3,3,0]oct-1(5)ene- 3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid aethoxyaethyl ester.
More preferred are: 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5) ene-3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic aicd or its hydrochloric acid salt or its lactic acid salt, 1-cyclopropyl-6,8-difluoro-7-[6-aethylamino-3-azabicyclo[3,3,0] oct-1(5)ene-3-yl]-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl-8- chloro-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboyxlic acid or its hydrochloric acid salt or its lactic acid salt, 7-[6-aethylaaino-3- azabicyclo[3,3,0]oct-1(5)ene-3-yl]-B-chloro-1-cyclopropyl-6-fluoro- 1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-amino-3-azabicyclo [3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-8-aethoxy-1,4- dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-methylamino-3- azabicyclo[3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro- 4-oxo-1,8-naphthyridine-3-carboxylic acid, 7-[6-amino-3-azabicyclo [3,3,0]oct-1(5)ene-3-yl]-5-amino-1-cyclopropyl-6,8-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-aaino-3-azabicyclo
[3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo- 1,8-naphthyridine-3-carboxylic acid, 9-fluoro-10-[6-amino-3- azabicyclo[3,3,0]oct-1(5)ene-3-yl]-3-(S)-aethyl-7-oxo-2,3-dihydro- 7H-pyrido[1,2,3,-de]-1,4-benzoxazine-6-carboxylic acid, 9-fluoro- 10-[6-methyla
Figure imgf000010_0001
mino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]-3-(S)-aethyl- 7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 7-[6-amino-3-azabicylo[3,3,0]oct-1(5)ene-3-yl]-1-(t-butyl)-6- fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, 7-[6-t- butoxycarbonylamino-3-azabicyclo[3,3,0]oct-l(5)ene-3-yl]-1- cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid.
The quinolone coapounds of the present invention represented by foraula(I) and pharmaceutically acceptable salts thereof can be prepared as follows.
Process A
Figure imgf000011_0001
wherein:
R1, R3, R4, X, Z and n are the same as defined previously;
R2 is a hydrogen atom or a carboxy protecting group;
L is a leaving group which is a fluorine, chlorine or broaine atoa, a nethanesulfonyl group or a para-toluenesulfonyl group; and,
A is a hydrochloric, bromic, sulfuric or trifluoroacetic acid. ln accordance with the above Process A, the quinolone compounds of foraula(I) wherein R2 is a hydrogen atom or a carboxy protecting group(hereinafter referred to as the coapounds of formula (la)) can be prepared by reacting the coapounds of foraula(II) with the compounds of foraula(III) or (IlIa) in the presence of a base.
The coapounds of foraula(II) are well-known in the art and the coapounds of foraula(III) are novel and can be prepared in accordance with the methods described in Korean Patent Application No. 91-18097 entitled "Unsaturated Azabicycloaaine Coapounds and
Processes for the Preparation Thereof" (corr. to WD-A-......................).
The above reaction can be carried out in the presence of an inert solvent such as aethanol, ethanol, isopropanol, acetonitrile, pyridine, diaethylforaaaide, diaethylsulfoxide, dioxane, etc. or a mixture thereof at a temperature ranging from 10 and 200ºC preferably 50 and 120ºC for 10 ain to 24 hrs.
A base such as triethylaaine, diisopropylethylamine, pyridine, 1,8-diazabicyclo[5,4,0]undec-7-ene or alkaline aetal or alkaline earth aetal carbonate aay be used to neutralize the acids produced in the above reaction.
The compounds of formula(Ia) obtained from Process A wherein R2 is a hydrogen atom(hereinafter referred to as the
compounds of foraula(Ia-1)) can be converted to the coapounds of foraula(Ia) wherein R2 is a carboxy protecting group(hereinafter referred to as the compounds of formula(Ia-2)) in accordance with the following Process B. Process B
Figure imgf000013_0001
wherein:
R1, R3, R4, Z, X and n are the saae as defined previously;
Hal is a chlorine, broaine or iodine atoa; and
R2 is a carboxy protecting group which is a lower alkyl group such as aethyl, ethyl, n-propyl or t-butyl group, a lower alkanoyloxy-lower alkyl group such as acetoxyaethyl or pivaloyloxyaethyl group, a lower alkoxycarbonyloxy- lower alkyl group such as aethoxycarbonyloxyaethyl or 1-ethoxycarbonyloxyethyl group, a lower alkoxyaethyl group such as aethoxyaethyl group, a di(lower alkyl) amino-lower alkyl group such as diaethylaminoethyl group or a 4-methylene-5-methyl-1,3-dioxolene-2-one group.
In accordancce with the above Process B, the compounds of formula(Ia-2) can be prepared by reacting the compounds of formula (Ia-1) with the coapounds of R2-Hal in an inert solvent such as haloalkane or dimethylformamide in the presence of a base such as diisopropylethylamine.
The compounds of fόraula(Ia-1) obtained from Process A can be converted to the coapounds of foraula(Ia) wherein R2 is a pharmaceutically acceptable aetal or organic cation(hereinafter referred to as the coapounds of foraula(Ia-3)) in accordance with the following Process C.
Process C
Figure imgf000014_0001
wherein:
R1, R3, R4, Z, X and n are the same as defined previously; and R2 is a pharmaceutically acceptable aetal or organic cation.
In accordance with the above Process C, the coapounds of formula(Ia-3) can be prepared by dissolving the coapounds of formula (Ia-1) in a lower alcohol or haloalkane solvent; adding thereto an R2-donor in water or a lower alcohol; and collecting the produced precipitates or removing the solvent.
Said R2-donor used in the above reaction may be sodium hydroxide, potassium hydroxide, calcium hydroxide, aagnesium hydroxide, silver nitrate or organic cation coapounds.
The coapounds of foraula(Ia-3) may further encompass, their hydrates. The compounds of formula(Ia) obtained from Process A wherein R4 is a hydrogen atom(hereinafter referred to as the coapounds of foraula(Ia-4)) can be converted to the coapounds of foraula(Ia) wherein R4 is the saae as defined in the foraula(Ia), excepting a hydrogen atoa(hereinafter referred to as the compounds of formula(Ia-5)) by using the following Process D.
Process D
Figure imgf000015_0001
wherein:
R1, R2, R3, Z, X and n are the same as defined in the formula
(la); and
R4 is the same as defined in the foraula(Ia), except a
hydrogen atom.
In accordance with the above Process D, the compounds of formula(Ia-5) can be prepared by reacting the compounds of formula (Ia-4) with an R4-donor of foraula R4-Hal(wherein Hal is a chlorine, bromine or iodine atom) in the presence of a base such as triethyl- amine, diisopropylethylaaine, 1,8-diazabicyclo[5,4,0]undec-7-ene, sodium hydride, potassium hydride, calcium hydride or alkaline metal carbonate. The above process is advantageous especially when R3 is a hydrogen atom or an alkyl group and R4 is a nitrogen protecting group aetabolizable in vivo.
If R4 is a formyl group, the compound of formula(Ia-4) is reacted with acetic anhydride or sodium acetate in formic acid; and if R4 is an acyl group, with an acid anhydride or halide having two to four carbon atoms in the presence of a base such as
triethylamine or pyridine.
The coapounds of formula(Ia) may be converted to acid addition salts thereof with an inorganic or organic acid such as hydrochloric, sulfuric, phosphoric, nitric, aethanesulfonic, acetic, formic, propionic, lactic, maleic, malonic, fumaric, tartaric, citric, ascorbic, glutamic, paratoluenesulfonic acid, etc; and to their hydrates.
The above conversion reaction is carried out by dissolving the compounds of formula(Ia) in a solvent, e.g., a lower alcohol such as methanol or ethanol, or a haloalkane such as chloroform, dichloromethane or dichloroethane; adding an aqueous or alcoholic solution of a selected organic or inorganic acid; and collecting the precipitates produced therefrom or removing the solvent.
The present invention further encompasses a pharmaceutical composition comprising one or more compounds of foraula(I) and non- toxic inert excipients.
The compounds of the present invention can be administered locally, orally, parenterally or rectally, preferably intravenously or intramuscularly. In general, it has been shown advantageous to administer the compounds of the present invention in an amout of about 0.5 to 500, preferably 1 to 100mg/kg of body weight per day in single or divided doses. A dosage ranging from about 1 to
200mg/kg of body weight, particularly 1 to 50mg/kg of body weight is preferred. However, it will be understood that the amount of the compound actually administered may be adjusted in the light of the relevant circumstances including the form of formulation, the chosen route of administration, the age, weight and response of the individual patient, and the severity of the patient's symptoms.
One or more compounds of the present invention may be either administered as such or formulated for administration by mixing therewith non-toxic, inert pharmaceutically acceptable expients such as solid, semi-solid or liquid diluent, filler and carrier. Examples of such foraulation are in the form of: a tablet, lozenge, capsule, granule, suppository, solution, suspension, emulsion, paste, ointment, cream, lotion, powder, spray and the like.
In case of tablet, lozenge, capsule and granule, the active compounds of the present invention may be coabined with conventional expients, e.g., fillers and extenders such as starch, lactose, sucrose, glucose mannitol and the like, binders such as carboxymethyl cellulose, alginate, gelatine, polyvinylpyrolidone and the like; disintegrants such as calcium carbonate, sodium bicarbonate and the like; absorption accelerants such as quarternary ammonium compound and the like; wetting agents such as cetyl alcohol, glycerine monostearate and the like; adsorbents such as kaoline, bentonite and the like; lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene glycol and the like; or mixtures thereof. The tablet, lozenge, capsule, pill and granule may be coated with conventional coating materials including any opacifier.
The suppository may contain conventional soluble or insoluble expients, e.g., polyethylene glycol, fat, polymeric ester or a mixture thereof in addition to the active compound.
The ointment, paste, cream and the like may contain conventional expients, e.g., animal or vegetable fat, wax, paraffin, starch, cellulose derivatives, polyethylene glycol, bentonite, talc, zine oxide or a aixture thereof in addition to the active compounds.
The solution or emulsion for oral administration may contain conventional expients such as solvents, solubilizers and emulsifiers, e.g., water, ethyl alcohol, benzyl benzoate, propylene glycol, cotton seed oil, pinutts oil, corn oil, olive oil, fatty esters such as glycerine, polyethylene glycol or sorbitan, or a mixture thereof in addition to the active compounds.
The solution, suspension or emulsion for parenteral administration may contain a sterilized isoaetric solution or emulsion. In particular, the suspension may contain the expients, e.g., liquid diluent or suspending agent such as water, ethyl alcohol or propylene glycol.
The formulations may comprise about 0.1 to 99.5% by weight, preferably 0.5 to 95% by weight of the active compounds of the present invention; and may further contain conventionally accepted amounts of dyes, preservatives, sweetners and additives.
It will be apparent to those skilled in the art that certain changes and modifications may be made to this invention without departing from the spirit or scope of the invention as it is further illustrated below.
Example 1: Preparation of 7-[6-maino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000019_0001
To 10ml of acetonitrile was added 330mg of 6-amino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 320mg of 1- cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid; and the resulting solution was refluxed for 5 hours after an addition of 616ul of 1,8-diazabicyclo[5,4,0]undec-7-ene. The
reaction mixture was cooled and filtered; and the residue was
washed with acetonitrile to obtain 340mg of the desired compound in light yellow precipitate(yield: 85%).
m. p.: 213~215ºC
MS m/z (rel. int, %) ; 387 (M+), 370 (100), 343 (27), 326 (73), 299 (25)
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.75 (1H, s), 7.76 (1H, dd, J = 14.7, 1.5 Hz),
4.63 (4H, br, s), 4.39 (1H, m), 4.1 (1H, m), 4.39 (1H, m), 4.1 (1H, m), 2.90 (1H, m), 2.61 (1H, m), 2.52 (1H, m ), 2.35 (1H, m), 1.26(4H,m) Example 2: Preparation of 1-cyclopropyl-6,8-difluoro-7-[6-methyl- amino-3-azabicyclo[3,3,03oct-1(5)ene-3-yl]-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000020_0001
To 3ml of acetonitrile was added 40mg of 6-methylamino- 3-azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 37.5mg of 1- cyclopropyl-6, 7, B-trifluoro-1, 4-dihydro-4-oxoquinoline-3-carboxylic acid; and the resulting solution was refluxed for 5 hours after an
addition of 72μl of 1,8-diazabicyclo[5,4 ,0]undec-7-ene. The
reaction mixture was cooled and filtered; and the residue was washed with acetonitrile to obtain 34mg of the desired compound in white
precipitate (yield: 652) .
m.p. : 194~ 196ºC
MS m/z (rd. int. %) : 401 (M+), 370 (89), 326 (100), 299 (15), 285 (10), 258 (10),237 (10), 220 (20)
1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.74 (1H, s), 7.73 (1H, d. J = 14 Hz).
4.67 (4H. br, m), 4.39 (1H, br, s).4.09 (1H, m), 2.85 (1H, m), 2.71 93H, s), 2.61 (1H, m),
2.50 (1H, m), 2.42 (1H, m), 1.21 (4H, m)
Example 3: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-cyclopropyl-8-chloro-6-fluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000021_0001
To 25ml of acetonitrile was added 800mg of 6-amino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 790mg of 1- cyclopropyl-6,7-difluoro-8-chloro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid; and the resulting solution was refluxed for 5 hours after an addition of 1.38ml of 1,8-diazabicyclo[5,4,0]undec-7-ene. The reaction mixture was cooled and filtered; and the residue was washed with acetonitrile to obtain 400mg of the desired coapound in white color(yield: 38%).
m.p.: 193~194ºC
MS m/z (rel. int. %) : 403 (M+, 10), 386 (72), 359 (27), 342 (100), 307 (62), 282 (65),
252 (51), 216 (47), 201 (32), 172 (27), 108 (35)
1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.97 (1H, s), 8.03 (1H, d, J=12 Hz),
4.46-4.34 (6H, m), 2.80 (1H, br, s), 2.61 (1H, br, s), 2.46 (2H, br, s),
1.32 (2H, m), 0.98 (2H, m)
Example 4: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-8-chloro-1-cyclopropyl-6-fluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000022_0002
To 2.5ml of acetonitrile was added 100mg of 6-methylamino- 3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 95mg of 1- cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid; and the resulting solution was refluxed for 4 hours after an addition of 164μl of 1,8-diazabicyclo[5,4,0]undec-7-ene. The
reaction mixture was cooled and filtered; and the residue was washed with acetonitrile to obtain 80mg of the desired compound in white color(yield: 60%).
a.p.: 207~ 208ºC
S m/z (rel. int, %) : 417 (M+, 6), 386 (90), 342 (100), 308 (46), 288 (29),
263 (22), 216 (27), 122 (50), 109 (68)
H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.95 (1H, s), 8.04 (1H. d, J = 14.4 Hz),
4.46-4.33 (6H, br, m), 2.7 (3H, s),
2.82-2.49 (4H, m), 1.32 (2H, m), 0.98 (2H, m)
Example 5: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-8-bromo-1-cyclopropyl-6-fluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000022_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 344mg of 8-broao-1-cyclopropyl-6,7-difluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 271mg of the desired compound
(yield: 70%).
m.p.: 209~213ºC
1H -NMR (CDCI3 + CD3COOD, δ ppm) ; 8.15 (1H, s), 7.49 (1H, d, J=12.0 Hz),
4.48 (4H, br. s), 4.35 (1H, m), 4.01 (1H, m), 2.92 (1H, m ), 2.63 (1H, m), 2.50
Figure imgf000023_0002
(1H, m), 2.34 (1H, m), 120~1.05 (4H. m )
Example 6: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-cyclopropyl-6-fluoro-8-methoxy-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000023_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 295mg of 1-cyclopropyl-6,7-difluoro-8-methoxy-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 232mg of the desired compound
(yield: 582).
m. p.: 195~198ºC 1Η-NMR (CDCI3 + CD3COOD, δ ppm) ; 8.84 (1H, s), 7.69 (1H, d, J = 13.8 Hz), 4.55-4.35
(5H, br, s), 4.05 (1H, m), 3.59 (3H, s), 2.95~230 (4H, m), 1.23~1.05 (4H, m)
Example 7: Preparation of 7-[6-aethylaaino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo- 1,8-naphthyridine-3-carboxylic acid
Figure imgf000024_0001
To 2ml of acetonitrile was added 70mg of 6-methylamino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 62mg of 1-cyclopropyl- 7-chloro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid; and
the resulting solution was refluxed for 4 hours after an addition
of 62mg of 1,8-diazabicyclo[5,4,0]undec-7-ene. The reaction mixture was cooled, concentrated under a reduced pressure and fractionated
on silica gel column chromatography(eluent:chloroform/methanol/
water=15/3/1) to obtain 60mg of the desired compound in yellow color
(yield: 71%).
m.p.: 185~ 190ºC
MS m/z (rel. int, %) : 384 (M+,8), 353 (17).342 (100).311 (62), 296 (55),284 (15),
218 (15), 163 (10), 122 (15), 109 (15)
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.69 (1H, s), 7.98 (1H, br, s).4.63~4.45 (5H, br, m),
3.64 (1H, br, s), 2.68 (3H, s), 2.8~2.45 (4H, m). 1.28 (2H, br, s), 1.07 (2H, br, s) Example 8: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-6,8-difluoro-1-ethyl-1,4-dihydro-4-oxoquinoline- 3-carboxylic acid
Figure imgf000025_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 343mg of 1-ethyl-6, 7,8-trifluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subjected to the same process
as described in Exaaple 1 to obtain 291mg of the desired compound
(yield: 652).
m.p.: 245~ 249ºC (decomposition)
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.78 (1H, s), 7.86 (1H, d, J=14.2 Hz).
4.60 (4H, br. s), 4.31 (1H, m), 4.23 (2H, q, J=7 Hz), 2.94 (1H, m), 2.64 (1H, m), 2.51 (1H, m),
2.35 (1H, m), 1.45 (3H, t, 1=7 Hz)
Example 9: Preparation of 7-[6-amino-3-azabicyclo[4,3,0]non-1(5)
ene-3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000025_0002
To 10ml of acetonitrile was added 400mg of 6-amino-3- azabicyclo[4,3,0]non-1(5)ene dihydrobromide and 365mg of 1- cyclopropyl-6,7,8-trifluoro-4-oxoquinoline-3-carboxylic acid; and
the resulting solution was refluxed for 5 hours after an addition
of 735μl of 1,8-diazabicyclo[5,4,0]undec-7-ene. The reaction mixture was cooled and filtered; and the residue was washed with acetonitrile to obtain 387mg of the desired compound in light yellow precipitate
(yield: 752) .
m.p, : 200~ 204ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.76 (1H, s), 7.73 (1H, d, J=13Hz), 4.68 (1H, br, s),
4.64 (4H, br, s), 4.42 (1H, br, s), 4.10 (1H, br, s), 2.91 (1H, m), 2.65 (1H, m), 25.5 (1H, m), 2.35 (1H, m), 1.47 (2H, m), 1.25 (4H, m)
Example 10: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-5-amino-1-cyclopropyl-6,8-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000026_0001
To 2ml of acetonitrile was added 50mg of 6-amino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 50mg of 5-amino-1- cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic
acid; and the resulting solution was refluxed for 5 hours after an addition of 86μl of 1,8-diazabicyclo[5,4 ,0]undec-7-ene. The reaction aixture was cooled and filtered; and the residue was washed with
acetonitrile to obtain 35mg of the desired coapound in light yellow color(yield: 50%) .
m. p. : 134~ 137ºC MS m/z (rel. int. %) : 407 (M+, 23), 385 (14), 358 (45), 295 (23), 231 (15), 50 (100), 137 (40) 1H-NMR (CDCI3 + CD3COOD, δ ppm) - 8.63 (1H, s), 4.55 (5H, br, s), 3.91 (1H, br, s),
2.78~2.43 (4H, br, m), 1.18 (2H, br, s),
1.04 (2H, br, s)
Example 11: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-5-amino-1-cyclopropyl-6,8-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000027_0001
To 2ml of acetonitrile was added 70ag of 6-methylamino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 66mg of 5-amino-1- cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic
acid; and the resulting solution was refluxed for 4 hours after an
addition of 115μl of 1,8-diazabicyclo[5,4,0]undec-7-ene. The
reaction aixture was cooled and filtered; and the residue was
washed with acetonitrile to obtain 73mg of the desired compound in
light yellow color(yield: 80%). m. p. : 222~ 224ºC
MS m/ z(rel. int, %) : 416 (M+, 95), 385 (100), 372(37), 320 (38), 300 (45),231 (87),
216 (25), 122 (56), 109 (57)
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.63 (1H, s), 4.65~4.41 (5H, m),
3.90 (1H, br, s), 2.68 (3H, s), 2.80~2.44 (4H. m), 1.19 (2H, m), 1.05 (2H, m)
Example 12: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-(2,4-difluorophenyl)-6,8-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000028_0001
To 1.2ml of acetonitrile was added 65mg of 6-amino-3- azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 70mg of 1-(2,4- difluorophenyl)-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid; and the resulting solution was refluxed for 4 hours after an addition of 91μl of 1,8-diazabicyclo[5,4,0]undec-7-ene.
The reaction aixture was cooled and filtered; and the residue was
washed with acetonitrile and ethylether to obtain 45mg of the
desired coapound(yield: 50%).
m.p: 185~ 190ºC(decoaposition)
MS m/z (rel. int, %) : 459 (M+, 1), 442 (3), 415 (30), 398 (100), 371 (40), 321 (15), 292 (17),
151 (10), 123 (14) 1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.49 (1H, s), 7.91 (1H, d, J = 14 Hz). 8.17 (1H, m),
7.08 (2H, m), 4.50-4.30 (5H, m),
2.71-232 (4H, m)
Example 13: Preparation of 7-[6-aethylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-(2,4-difluorophenyl)-6,8-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000029_0001
To 1.2ml of acetonitrile was added 65mg of 6-methylamino- 3-azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 70ag of 1-(2,4- difluorophenyl)-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid; and the resulting solution was refluxed for 4 hours after an addition of 91μl of 1,8-diazabicyclo[5,4,0]undec-7-ene.
The reaction aixture was cooled and filtered; and the residue was washed with acetonitrile and ethylether to obtain 60mg of the
desired compound(yield: 65%).
m.p.: 228~ 300ºC
MS m/z (rel. int, %) : 473 (M% 3), 441 (13), 430 (25), 399 (100), 372 (23), 307 (10,
237 (6), 122 (10), 109 (15), 94 (10)
1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.48 (1H, s), 7.89 (1H, dd, J = 13, 15 Hz),
7.50 (1H, m), 7.08 (2H, m), 4.56-4.31 (5H, m), 2.74~2.39 (4H, m), 2.62 (3H, s) Example 14: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8- naphthyridine-3-carboxylic acid
Figure imgf000030_0002
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 282mg of 1-cyclopropyl-7-chloro-6-fluoro-4-oxo-1,8- naphthyridine-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 229mg of the desired coapound
(yield: 59%).
m.p.: 175~179ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.72 (1H, s), 7.82 (1H, br, s), 4.71~4.52 (5H, br, m),
3.61 (1H, br, s), 2.8~2.39 (4H, m), 1.28 (2H, br, s), 1.05 (2H, br, s)
Example 15: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5) ene-3-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo- 1 ,8-naphthyridine-3-carboxylic acid
Figure imgf000030_0001
To 2ml of acetonitrile was added 70mg of 6-methylamino- 3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 62mg of 1- cyclopropyl-7-chloro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic
acid; and the resulting solution was refluxed for 4 hours after an
addition of 62ag of 1,8-diazabicyclo[5,4,0]undece-7-ene. The
reaction aixture was cooled, concentrated under a reduced pressure
and fractionated on silica gel column chromatography(eluent:
chloroform/methanol/water=15/3/1) to obtain 60mg of the desired
compound in yellow color(yield: 71%).
m.p.: 185~190ºC MS m/z (rel. int, %) : 384 (M+, 8), 353 (17), 342 (100), 311 (62), 296 (55), 284 (15), 218 (15),
163 (10), 122 (15), 109 (15) 1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.69 (1H, s), 7.98 (1H, br, s), 4.63~4.45 (5H, br,m),
3.64 (1H, br, s), 2.68 (3H, s), 2.8~2.45 (4H, m), 1.28 (2H, br, s), 1.07 (2H, br, s)
Example 16: Preparation of 9-fluoro-10-[6-amino-3-azabicyclo[3,3,0]
oct-1(5)ene-3-yl]-3-(S)-methyl-7-oxo-2,3-dihydro-7H- pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid
Figure imgf000031_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5 )ene dihydro- bromide and 295mg of 9,10-difluoro-3-(S)-methyl-7-oxo-2,3-dihydro-7H- pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid were subjected to the same process as described in Example 1 to obtain 196mg of the desired compound (yield: 49%) .
m.p. : 183- 186ºC
MS m/z (rel. int, %) : 399 (M+, 7), 368 (40), 357 (27), 326 (100), 234 (57), 219 (67),
205 (35), 193 (31), 122 (44), 109 (47)
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.75 (1H, s), 7.65 (1H, d, J = 14.2 Hz),
4.65~430 (6H, m), 4.25 (2H, br, s), 2.98~235 (4H, m), 1.67 (3H, d, J = 6.5 Hz)
Example 17: Preparation of 9-fluoro-10-[6-methylamino-3-azabicyclo
[3, 3, 0]oct-1(5)ene-3-yl]-3-(S)-aethyl-7-oxo-2,3-dihydro- 7H-pyrido[1,2,3-de]-1 ,4-benzoxazine-6-carboxylic acid
Figure imgf000032_0001
To 1.5ml of acetonitrile was added 70mg of 6-methylamino- 3-azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 63mg of 9,10- difluoro-3-(S)-methyl-7-oxo-2,3-dihydro-7H-pyrido[1,2,3-de]-1,4- benzeoxazine-6-carboxylic acid; and the resulting solution was
refluxed for 4 hours after an addition of 115μl of 1,8-diazabicyclo
[5,4,0]undece-7-ene. The reaction aixture was cooled, filterted and washed with acetonitrile to obtain 45mg of the desired compound
(yield: 50%).
m.p.: 186~188ºC
MS m/z (rel. int, %) : 399 (M+,7), 368 (40), 357 (27), 326 (100), 234 (57),219 (67),
205 (35), 193 (31), 122 (44), 109 (47)
1H -NMR (CDCI3 + CD3COOD, δ ppm) ; 8.78 (1H, s), 7.68 (1H, dd, J = 13 Hz, 1.2 Hz),
4.67~4.28 (8H, m), 2.67 (3H, s), 2.80-2.47 (4H, m), 1.61 (3H, d, J = 6.7 Hz)
Example 18: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline- 3-carboxylic acid
Figure imgf000033_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 252mg of 6,7-difluoro-1-ethyl-1,4-dihydro-4-oxoquinoline- 3-carboxylic acid were subjected to the same process as described in
Example 1 to obtain 260mg of the desired eompound(yield: 732).
m.p.: 212~215ºC 1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.75 (1H, s), 7.85 (1H, d, J = 12.4 Hz),
7.12 (1H, d, J= 73 Hz), 4.45 (4H, br, s),
4.31 (1H, m ), 4.09 (2H, q, J = 7 Hz), 2.42 (2H, m), 2.18 (2H, m ), 1.42 (3H, t, J=7 Hz)
Example 19: Preparation of 7-[6-aethylaaino-3-azabicyclo[3,3,0]
oct-1(5)ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000034_0001
350mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 252mg of 6,7-difluoro-1-ethyl-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 241mg of the desired compound
(yield: 652).
m.p.: 220~224ºC 1H-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.69 (1H, s), 7.76 (1H, d, J = 12.4 Hz),
7.69 (1H, d, J = 7.3 Hz), 4.50-439 (5H, br, s), 4.05 (2H, q, J = 7 Hz), 2.91 (1H, m), 2.70 (3H, s), 2.49~2.20 (3H, br, s), 1.41 (3H, t, J = 7 Hz) Example 20: Preparation of 7-[6-amino-3-azabicyclo[3,3,03oct-1(5) ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxoquinoline- 3-carboxylic acid
Figure imgf000035_0001
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 286mg of 1-ethyl-6,7-difluoro-8-chloro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subejcted to the same process as described in Example 1 to obtain 246mg of the desired compound (yield: 632).
m.p.: 218~221ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.95 (1H, s), 7.98 (1H, d, J = 14.1 Hz),
4.58 (5H, br, s), 4.21 (2H, q, J = 7 Hz), 2.62 (1H, m), 2-51 (2H, m),
2.31 (1H,m), 1.44 (3H, t, J =7Hz)
Example 21: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-ethyl-6-fluoro-8-chloro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000036_0001
350mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 286mg of 1-ethyl-6,7-difluoro-8-chloro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 223mg of the desired compound (yield: 55%).
m.p.: 223~ 227ºC
1H -NMR (CDCl3+ CD3COOD, δ ppm) ; 8.93 (1H, s), 7.89 (1H, d, J = 14.1 Hz),
4.59-439 (5H, br, s).4.20 (2H, q, J = 7 Hz), 2.69 (3H, s), 2.60 (1H, m), 2.53 (2H, m). 2.30 (1H, m ), 1.43 (3H, t, J = 7 Hz)
Example 22: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-ethyl-5-amino-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000036_0002
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 286mg of 1-ethyl-5-amino-6,7,8-trifluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 242mg of the desired compound
(yield: 62%).
m.p.: 238~243ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.71 (1H, s), 4.52 (4H, br, s), 431 (1H, m),
4.21 (2H, t, J = 7 Hz).2.92 (1H, m), 2.64 (1H, m), 2.48 (1H, m), 2.33 (1H, m), 1.42 (3H, t, J = 7 Hz)
Example 23: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-ethyl-5-amino-6,8-difluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000037_0001
350mg of 6-methylamino-3-azabicyclo[3,3,03oct-1(5)ene
dihydrobromide and 286mg of 1-ethyl-5-amino-6,7,8-trifluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 223mg of the desired
compound(yield: 55%).
m. p. : 218~ 221ºC
1Η-NMR (CDCI3 + CD3COOD, δ ppm) ; 8.69 (1H, s), 4.50~4.41 (5H, br, s),
4.18 (2H, t, J = 7 Hz), 2.90 (1H, m), 2.70 (3H, s), 2.65 (1H. m), 2.47 (1H, m), 2.31 (1H, m), 1.38 (3H, t, J = 7 Hz) Example 24: Preparation of 7-[6-amino-3-azabicyclo[3,3,03oct-1(5) ene-3-yl]-1-(t-butyl)-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000038_0002
330mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 299mg of 6,7,8-tirfluoro-1-(t-butyl)-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subjected to the same process as described in Exaaple 1 to obtain 222mg of the desired coapound (yield: 552).
m.p.: 189~192ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.58 (1H, s), 8.12 (1H, d, J = 14.2 Hz),
4.51-435 (5H, m), 2.91 (1H, m),
2.60-2.45 (2H, m), 2.31 (1H, m), 1.83 (9H, s)
Example 25: Preparation of- 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-(t-butyl)-6,8-difluoro-1 ,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000038_0001
355mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene
dihydrobromide and 299mg of 6,7,8-trifluoro-1-(t-butyl)-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Exaaple 1 to obtain 238ag of the desired coapound
(yield: 57%).
m.p.: 205~ 208ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.56 (1H, s), 8.15 (1H, d, J = 14.2 Hz),
4.50~4.30 (5H, br, s), 2.93 (1H, m), 2.71 (3H, s), 2.62~2.43 (2H, m), 2.30 (1H, m), 1.81 (9H, s)
Example 26: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-(t-butyl)-6-fluoro-8-chloro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000039_0001
325mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 315mg of 6,7-difluoro-8-chloro-1-(t-butyl)-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Exaaple 1 to obtain 206mg of the desired compound
(yield: 492).
m.p.: 179~184ºC 1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 835 (1H, s), 8.09 1IH, d, J = 14.2 Hz),
431~432 (5H, m), 2.95 (1H, m ),
2.65~2.42 (2H, m), 2.25 (1H, m), 1.85 (9H, s)
Example 27: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1(5 ) ene-3-yl]-1-(t-butyl)-6-fluoro-8-chloro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000040_0001
355mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene
dihydrobromide and 315mg of 6,7-difluoro-8-chloro-1-(t-butyl)-1,4- dihydro-4-oxoquinoline-3-carboxylic acid were subejcted to the same process as described in Example 1 to obtain 195mg of the desired
compound(yield: 452).
m.p.: 175-178ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 834 (1H, s), 8.05 (1H, d, J = 14.2 Hz),
435~430 (5H, m), 2.95 (1H, m), 2.72 (3H, s), 2.65~2.45 (2H, m), 2.24 (1H, m), 1.84 (9H, s) Example 28: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5) ene-3-yl]-1-(4-fluorophenyl)-6,8-difluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000041_0001
325mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 337mg of 1-(4-fluorophenyl)-6,7,8-trifluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 274mg of the desired compound
(yield: 622).
m.p.: 221~224ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 839 (1H, s), 8.01 (1H, d, J = 14.2 Hz),
7.49 (2H, m), 7.25 (2H, m), 4.75-4.49 (5H, m), 2.91~237 (4H, m)
Example 29: Preparation of 7-[6-methylamino-3-azabicyclo[3 ,3, 0]oct- 1(5 )ene-3-yl]-1-(4-fluorophenyl )-6 , 8-difluoro-1 ,4- dihydro-4-oxoquinoline-3-carboxylic acid
Figure imgf000041_0002
355mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobroaide and 337mg of 1-(4-fluorophenyl)-6,7,8-trifluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid were subejcted to the same process as described in Example 1 to obtain 296mg of the desired compound(yield: 65%).
m.p. : 227~ 230ºC 1H -NMR (CDCl3 + CD3COOD, δ ppm) 837 (1H, s), 7.99 (1H, d, J = 142 Hz),
7.48 (2H, m ), 126 (2H, m), 4.76~4.51 (5H, m),
2.73 (3H, s), 2.90~2.3 6 (4H, m)
Example 30: Preparation of 7-[6-amino-3-azabicyclo[3,3 ,0]oct-1(5)
ene-3-yl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8- naphthyridine-3-carboxylic acid
Figure imgf000042_0001
325mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 270mg of 1-ethyl-7-chloro-6-fluoro-4-oxo-1,8- naphthyridine-3-carboxylic acid were subjected to the same process as described in Example 1 to obtain 205mg of the desired compound
(yield: 572).
m.p: 179~183ºC 1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.75 (1H, s), 8.09 (1H, d, J = 12.4 Hz),
4.75~435 (7H, m), 2.90~2.45 (4H, m),
1.51 (3H, t, J = 7Hz)
Example 31: Preparation of 7-[6-methylamino-3-azabicyclo[3,3,0]oct- 1 (5 ) ene-3-yl]-1-ethyl-6-fluoro-1 ,4-dihydro-4-oxo-1,8- naphthyridine-3-carboxylic acid
Figure imgf000043_0001
355mg of 6-methylamino-3-azabicyclo[3,3,0]oct-1(5)ene dihydrobromide and 270mg of 1-ethyl-7-chloro-6-fluoro-4-oxo-1,8- naphthyridine-3-carboxylic acid were subjected to the same process
as described in Example 1 to obtain 231mg of the desired compound
(yield: 62%).
m.p.: 185~189ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.74 (1H, s), 8.07 (1H, d, J = 12.4 Hz),
4.76~436 (7H, m), 2.71 (3H, s), 2.90-2.44 (4H,m), 1.51 (3H, t, J = 7Hz) Example 32: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-1-(t-butyl)-6-fluoro-1,4-dihydro-4-oxoqumoline- 3-carboxylic acid
Figure imgf000044_0002
320mg of 6-amino-3-azabicyclo[3,3,0]oct-1(5)ene dihydro- bromide and 281mg of 1-(t-butyl)-6,7-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subejcted to the same process
as described in Example 1 to obtain 205mg of the desired compound
(yield: 532).
m.p.: 193~196ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 835 (1H, s), 7.83 (1H, d, J = 12.3 Hz), 7.21 (1H, s),
4.70~4.49 (5H, m), 2.85~2.43 (4H, m), 1.91 (9H, s)
Example 33: Preparation of 7-[6-methylamino-3-azabicyclo[3 , 3 ,0]oct- 1(5 )ene-3-yl]-1-(t-butyl)-6-fluoro-1 ,4-dihydro-4- oxoquinoline-3-carboxylic acid
Figure imgf000044_0001
350mg of 6-aethylamino-3-azabicyclo[3,3,0)oct-1(5)ene
dihydrobroaide and 281mg of 1-(t-butyl)-6,7-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid were subjected to the same process
as described in Example 1 to obtain 248mg of the desired compound
(yield: 62%).
m.p.: 198~202ºC 1Η-NMR (CDCl3 + CD3COOD, δ ppm) ; 8.82 (1H, s), 7.81 (1H, d, J = 12.3 Hz), 7.19 (1H, s),
4.70~4.48 (5H, m ), 2.85~2.40 (4H, m), 2.72 (3H, s), 1.90 (9H, s)
Example 34: Preparation of 7-[6-acetamino-3-azabicyclo[3,3,0]oct- 1(5)ene-3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro- 4-oxoquinoline-3-carboxylic acid
Figure imgf000045_0001
193mg of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]- 1-cyclopropyl-5,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic
acid was dissolved in a aixture of 3ml of pyridine and 2.5ml of
acetic anhydride; and the resulting solution was stirred at a rool
temperature over night. The reaction mixture was poured into 20ml
of water and stirred at a room teaperature for 2 hours. The
precipitate produced was filtered, washed with water, isopropanol and ethylether and dried under a reduced pressure to obtain 174mg of the desired compound(yield: 90%).
m.p.: 199~203ºC
1H -NMR (CDCl3 + CD3COOD, δ ppm) ; 8.77 (1H, s), 7.78 (1H. d, J = 14.6 Hz), 4.60 (4H, br, s), 4.50 (1H, m), 4.05 (1H, m), 2.91 (1H, m), 2.60 (1H, m), 2.52 (1H, m), 2.3 5 (1H, m), 2.01 (3H, s), 1.2 6 (4H,m)
Example 35: Preparation of 7-[6-t-butoxycarbonylamino-3-azabicyclo- [3,3,0]oct-1(5)ene-3-yl]-1-cyclopropyl-6,B-difluoro-1,4- dihydro-4-oxoquinoline-3-carboxylic acid methoxymethyl- ester
Figure imgf000046_0001
4B7mg of 7-[6-t-butoxycarbonylamino-3-azabicyclo[3,3,0] oct-1(5)ene-3-yl]-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4- oxoquinoline-3-carboxylic acid was suspended in a aixture of 10ml of hexamethylphosphoramide and 5M of tetrahydrofuran. To the resulting solution were added 250mg of aethoxymethyliodide and 200mg of
potassium carbonate powder; and the reaction mixture was stirred at a room temperature for 24 hours followed by an addition of 50ml of
dichloromethane. The resultant was washed with water and 5% NaHCO3; and the organic layer was then dehydrated with anhydrous sodium sulfate and concentrated. The residue thus obtained was crystallized with chlorofora-hexane to obtain 298mg of the desired compound
(yield: 56%) .
m.p. : 155~ 158ºC 1H-NMR (CDOl3, δ ppm) ; 8.79 (1H, s), 7.75 (1H, d, J= 14.5 Hz), 4.62 (4H, br, s), 4.51 (1H m), 4.25 (2H, br, s), 4.06 (1H, m), 3.81 (3H, s), 2.90 (1H, m), 2.61 (1H, m), 2.5 4 (1H, m), 2.33 (1H, m), 1.92 (9H, s), 1.25-1.15 (4H, m)
Example 36: Preparation of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)
ene-3-yl]-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3- carboxylic acid lactate
Figure imgf000047_0001
387mg of 7-[6-amino-3-azabicyclo[3,3,0]oct-1(5)ene-3-yl]- 6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic acid was
dissolved in a aixture of 10ml of dichloromethane and 2ml of ethanol;
and the resulting solution was stirred at a room temperature for 2
hours after an addition of 87μl of 85% lactic acid. The solvent was evaporated under a reduced pressure to obtain quantitatively the
desired compound.
m.p.: 180~184ºC
1H -NMR (CD3OD+CD3COOD, δ ppm) ; 8.74 (1H, s), 7.72 (1H, d, J = 14 Hz), 4.8~4.1 ( 7H, m), 2.85~2.3 5 (4H, m), 1.50-1.16 (7H, m) Use Example 1
A capsule formulation was prepared in accordance with the following coaposition:
Component Amount
Compound prepared in Example 1 100.0mg corn starch 25.0mg calcium carboxymethyl 23.0mg cellulose
magnesium stearate 2.0mg total 150.0mg
Use Example 2
A solution formulation was prepared in accordance with the following composition:
Compoment Amount
Compound prepared in Example 36 1 to 10g lactic acid or 0.1 to 2g sodium hydroxide
mannitol 0.1g deionized water 87.9 to 98.8g total 150g 1. In vitro anti-bacterial activity test
In order to deaonstrate the superior effectiveness of the quinolone derivatives of the present invention, the minimal inhibitory concentration(MIC) of several compounds synthesized in Examples hereof against the standard strains was determined and compared with ofloxacin and ciprofloxacin. These MIC values were taken by employing two-fold dilution method: that is, two-fold serial dilutionm of each of the test compounds were made and dispersed in a Mueller-Hinton agar medium; a standard strain which had the value of 107 CFU/ml was inoculated on the medium, which was then
incubated at 37ºC for 18 hours. The results of the MIC tests are shown in Table 1
Figure imgf000050_0001
Figure imgf000051_0001
Figure imgf000052_0001
2. Preventive effect on the systenic infection
10 fold of the pathogen which leads to 100% lethality were injected intraperitoneally to sale and feaale NMRl mice weighing 18 to 20g. Immediately and after 4 hours, the dose of test compounds which was deterained by two-fold serial dilution method was
administered orally or subcutaneously; and on day 7, the
effectiveness was evaluated in teras of ED50 calculated from the number of survived mice by the probit analysis.
Figure imgf000053_0001
3. Acute Toxicity Test
Test compounds were administered to feaale ICE mice weighing 20 to 25g and on day 14, LD50 was calculated from the number of survived mice by the probit analysis.
Table 3: Result of the Acute Toxicity Test
Figure imgf000054_0001
As can be seen from the results, the compounds of the present invention possess a broad spectrua of potent anti-bactieral activities against gram-positive and-negative bacteria as compared with the known quinolone antibiotics, ciprofloxacin and ofloxacin. The compounds of the present invention also exhibit superior activities to the known quinolone antibiotics in teras of 50% effective dose(ED50) on the systeaic bacterial infection. Further, the compounds of the present invention have low toxicity sufficient to be proved as drugs.
Accordingly, the compounds of the present invention will be useful as therapeutical compounds and preservatives of inorganic and organic material.

Claims

What is claimed is:
1. A quinolone carboxylic acid derivative of foraula(I) and pharaaceutically acceptable salts thereof:
Figure imgf000056_0001
wherein:
X is a nitrogen atoa or a C-Y group wherein Y is a hydrogen, fluorine, chlorine or bromine atom or a methoxy or methyl group; R1 is a C1-6 alkyl group optionally substituted with a halogen
atom or a hydroxy radical, an alkenyl group, a C3-6
cycloalkyl group, a phenyl group substituted with a
halogen atom or a divalent group of -OCH2"CH(CH3)-, -SCH2*CH2- or -SCH2"CH(CH3)- which forms an oxazine or thiazine ring
together with the nitrogen atoa to which R1 is attached and with X wherein X is C-Y;
R2 is a hydrogen atom, a carboxy protecting group or a
pharmaceutically acceptable metal or organic cation;
R3 and R4, which may be the same or different, are a hydrogen
atom, a lower alkyl group, an acyl group or a nitrogen protecting group aetabolizable in vivo:
Z is a hydrogen or halogen atom, an amino, hydroxy or methyl group; and
n is 1 to 3.
2. The compound of claim 1 wherein a carboxy protecting group is a lower alkyl, lower alkanoyloxy-lower alkyl, lower alkoxycarbonyloxy-lower alkyl, lower alkoxymethyl, di(lower alkyl) amino-lower alkyl or 4-methylene-5-methyl-1,3-dioxolene-2-one group.
3. The coapound of claim 1 which is the salt with a hydrochloric, sulfuric, phosphoric, nitric, methanesulfonic, acetic, formic, propionic, lactic, maleic, malonic, fumaric, tataric, citric, paratoluenesulfonic, ascorbic or glutamic acid.
4. A process for preparing a compound of formula(Ia), which comprises reacting a compound of formula(II) with a compound of formula(III) or (IlIa)
Figure imgf000057_0001
Figure imgf000058_0002
whrein:
R1, R3, R4, X, Z and n are the same as defined in claim 1;
R2 is a hydrogen atom or a carboxy protecting group as defined in claim 2;
L is a leaving group which is a fluorine, chlorine or bromine atom, a methanesulfonyl group or a para-toluenesulfonyl group; and
A is a hydrochloric, broaic, sulfuric or trifluoroacetic acid.
5. A process for preparing a coapound of foraula(Ia-2) wherein R2 is carboxy protecting group, which comprises reacting a compound of formula(Ia-1) with a compound of R2-Hal:
Figure imgf000058_0001
Figure imgf000059_0002
wherein:
R1, R3, R4, X, Z and n are the same as defined in claim 1;
R2 is a carboxy protecting group as defined in claim 2; and Hal is a chlorine, broaine or iodine atom.
6. A process for preparing a compound of formula(Ia-3) wherein R2 is a pharaaceutically acceptable aetal or organic cation, which coaprises reacting a coapound of foraula(Ia-1) with a compound of R2-donor:
Figure imgf000059_0001
wherein:
R1, R3, R4, X, Z and n are the same as defined in claim 1; and R2-donor is sodium hydroxide, potassium hydroxide, calcium
hydroxide, magnesium hydroxide, silver nitrate or tertiary or quarternary C1-4 alkylammonium.
7. A process for preparing a compound of formula(Ia-5), which comprises reacting a compound of formula(Ia-4) with a compound of R4-donor:
wherein:
Figure imgf000060_0001
R1, R3, R4 , X, Z and n are the same as defined in claim 1;
R2 is a hydrogen atom or a carboxy protecting group as defined in claim 2; and
R4-donor is R4-Hal wherein Hal is a chlorine, bromine or
iodine atoa and R4 is the same as defined in claim 1, excepting a hydrogen atom.
8. An antibacterial formulation coaprising at least one of the compounds of formula(I) as an active component.
Figure imgf000061_0001
wherein:
R1, R2, R3, R4, X, Z and n are the same as defined in claim 1.
PCT/EP1992/002264 1991-12-31 1992-11-02 Novel quinolone carboxylic acid derivatives and processes for preparing same WO1993013090A1 (en)

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